// Copyright (c) rubicon IT GmbH, www.rubicon.eu
//
// See the NOTICE file distributed with this work for additional information
// regarding copyright ownership.  rubicon licenses this file to you under 
// the Apache License, Version 2.0 (the "License"); you may not use this 
// file except in compliance with the License.  You may obtain a copy of the 
// License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the 
// License for the specific language governing permissions and limitations
// under the License.

using System;
using System.Collections.Generic;
using System.Linq;

namespace ActiveAttributes.Utilities
{
  internal class Vertex<T>
  {
    public Vertex ()
    {
      Index = -1;
      Dependencies = new List<Vertex<T>> ();
    }

    public Vertex (T value)
        : this ()
    {
      Value = value;
    }

    public Vertex (IEnumerable<Vertex<T>> dependencies)
    {
      Index = -1;
      Dependencies = dependencies.ToList ();
    }

    public Vertex (T value, IEnumerable<Vertex<T>> dependencies)
        : this (dependencies)
    {
      Value = value;
    }

    internal int Index { get; set; }

    internal int LowLink { get; set; }

    public T Value { get; set; }

    public ICollection<Vertex<T>> Dependencies { get; set; }
  }
}